# 90% Bone Repair in 30 Days From Paper Mill Waste - slug: 90-bone-repair-in-30-days-from-paper-mill-waste - date: 2026-04-02 - category: Biotech & Life Sciences The same industrial waste that pulp mills spend millions to dispose of could become a bone scaffold. In rats, a carbon-graphene material achieved nearly 90 percent repair in 30 days. ---